Valve.



N. P. MADER.

VALVE. APPLICATION FILED MAY 16, I914.

PatentedFeb. 1, 1916 NICHOLS P. MADER, OF BEAUMONT, CALIFORNIA.

VALVE.

To all whom it may concern:

Be it known that I, NICHOLS P. MADER, a citizen of the United States, residing at Beaumont, in the county of Riverside, State of California, have invented a new and useful Improvement in Valves, of which the following is a specification.

This invention relates to a valve and particularly pertains to a valve for controllingthe flow of air to the intake manifolds of internal combustion engines.

It is the object of this invention to provide' a valve which is adapted to be attached ,to the intake manifold of an internal combustion engine between the'carbureter and the engine cylinders by meansof which regulated quantities of cold air may be admitted to the manifold and drawn into the engine cylinders on the intake strokes of the pistons therein, whereby variations in the richness of the explosive mixture ac- I can be adjusted to govern the automatic ad'- mission of the air to various degrees of the suction.

A further object is to provide supplemental means for regulating the flow of air to the valve, which may be controlled from a remote point as from the steering wheel of the power propelled vehicle to which the internal combustion engine is applied.

The invention is illustrated in the accompanying drawings, in which:

Figure 1 is a view in side elevation of an internal combustion engine mounted on'the power propelled vehicle and showing the invention as applied. Fig. 2 is a detail front elevation of the'air inlet valve. Fig. 3 is a corresponding view of same showing the regulating disk on the face thereof removed. Fig. 4 is a vertical section on the line 44 of Fig. 2.

More specifically, 5 indicates a manifold pipe leading from a carbureter 6 to the cylinders of an internal combustion engine 7.

The-present invention resides in an air inlet valve mounted on the manifold 5,

Specification of Letters Patent. Application filed May 16, 1914. Serial naeaaoae.

Patented Feb. 1, 1916.

which valve comprises a casing formed with a face plate 8 having an annular flange 9 on its rear face formed with internal threads and which flange is screwed on a flange 10 formed on the back portion 11 of the valve casing which back portion 11 is provided with a nipple 12 threaded to engage an internally threaded aperture 13 in the wall of the manifold 5. The nipple 12 has a bore 14 extending therethrough forming a communication between the interior of the valve casing and the manifold 5.

The face plate 8 is formed with a series of apertures 15 arranged in a circle concentric with the center of the plate and spaced equal distances apart. Extending through the center of the plate 8 is a pin 16 the inner end of which is formed with a .head 17 and the outer end of which is threaded to receive a nut 18. The pin 16 is formed of two diameters, the larger portion 19 extending within the valve casing and the smaller portion 20 extending through the plate 8; a shoulder 21 formed at the juncture of the portions 19 and 20 abutting against the inside face of the plate 8 to limit the outward movement of the'pin 16. Slidably mountedon the enlarged portion 19 of the pin 16 within the valve casing is a valve disk 22 which is normally positioned in contact with the rear face of the plate 8 v to close the apertures 15 by means of a spring 23 wound on the pin 16 and bearing between the rear face of the disk 22 and the head 17. Pivoted on the rearward portion 20 of the pin 16 in front of the plate 8 is a disk 24 having perforations 25 formed therein adapted to register with the apertures 15 in the plate 8; this disk 24 being held in close contact with the'outer face of the plate 8 by means of a spring 26 wound on the stem 16 and bearing between the disk 24 and a sleeve 27 held in place on the pin 16 by means of the nut 18. This disk 24 is formed with a radial extension 28 on its peripheral edge, which connects with a wire 29 leading to a hand lever 30 conveniently disposed adjacent the steering wheel 31 of the vehicle 32 on which the engine 7 is mounted. The wire 29 is incased in a tube 3 The disk 24 is normally positioned with the perforations 25 therein out of register with the apertures 15 in the valve plate 8 by means of a spring 34 disposed at any convenient point, but .here shown as acting on the hand lever 30.

In the application of the invention, the tension of the spring 26 is adjusted by means of the nut 18 which is screwed on the pin 16 according to whether it is desired to increase or relax the tension of the spring. This operates to regulate the frictional engagement of the disk 24 with the plate 8 and acts to compensate for ear of the disk 24 and renders the latter self seating. The shoulder 19 serves to hold the pin 16 in position and permits the springs 23 and 26 to operate independent of each other; the spring 23 being lighter and of less tension than the spring 26.

In the operation of the invention, when it is desired to admit the air into the manifold, the operator manipulates the lever 30 to rock the disk 24 through means of the wire 29 and extension 28-thereon to position the perforations 25 therein in register with the apertures 15 in the plate 8; the perforations 25 being moved wholly or partly in register with the apertures 15 according to the volume of air it is desired to admit into the manifold pipe. vThe suction induced in the manifold by the intake stroke of the engine piston will then operate to draw air through the perforations 25 and apertures- 15; the disk 22 opening to permit the passage of air through the perforations 25 and apertures 15 according to the reduction of atmospheric pressure in the valve casing; the disk 22 opening in opposition to the spring 23 a distance proportionate to the tension thereof; the spring 23 operating to restore the disk 22 to its closed position.

The important feature of this invention resides in the fact that the disk 22 is sensitive to variations in the reduction of the atmospheric pressure in the valve casing and opening to a more or less extent according to thesintensity of the suction induced in the save casing so that just a sufficient quantity'of air will be admitted to the interior of the casing as is necessary to maintain a degree of suction approximately uniform. The disk 24 is normally disposed in its closed position when it is not desired to admit air to the manifold. The parts are so proportioned and so adjusted as not to conflict with the operation of the carbureter 6. By opening the apertures 15 to the perforations 25 when the engine is cut out, as when the vehicle is running down hill, the suction on the carbureter is greatly reduced and the cold air drawn into the engine cylinder through the air inlet valve will serve to reduce the temperature of the cylinders and thus prevent overheating.

The use of this invention economizes the consumption of fuel and increases the power and life of the engine.

What I claim is:

In an air inlet valve for manifolds, a valve casing communicating with the interior of the manifold and having an apertured face plate, a pin of differentialdiameter mounted in said face plate and its small diameter extending theretln'ough. a disk reciprocally mounted on the large diameter of said pin interiorly of the valve casing, a disk pivotally mounted on the small diameter of said pin exteriorly of the casing, said last named disk having perforations adapted to register with the apertures in the casing normally held out of communication therewith, a pair of springs wound on said.

stem bearing against the opposite faces of said disks to maintain the latter in close contact with the face plate on opposite sides thereof, and means for adjusting the tension of the outermost spring independent of the tension of the interiorly positioned spring.

In witness that I claim the foregoing I have hereunto subscribed my name this 28th day of April, 1914.

N. P. MADER.

Witnesses:

EDMUND A. STRAUsn, MARIE BA'ITEY. 

